The Food and Drug Administration (FDA) was expected on Monday to authorize a second COVID-19 booster shot as early as next week.

Both Moderna and Pfizer have asked the FDA for its approval for a fourth dose of its COVID vaccine.

The move comes amid early signs that the U.S. could soon experience another COVID wave — as the Omicron subvariant known as BA.2 spreads throughout Europe and other parts of the world.

Click here for the latest information on the FDA authorization.